JP4099129B2 - Carbon dioxide supply skin cosmetics - Google Patents

Description

  The present invention relates to a skin cosmetic that can continuously supply carbon dioxide to the skin.

  Since carbon circulation is promoted when carbon dioxide acts on the skin, various carbon dioxide-containing cosmetics have been proposed. Since cosmetics containing carbon dioxide itself need to use pressure-resistant containers, solid cosmetics containing carbonate and acid as a means of supplying carbon dioxide to the skin without the need for special containers Have been reported (Patent Documents 1 and 2).

  However, solid cosmetics are not preferred for application to the skin, and liquid skin cosmetics are desired. Cosmetics that form a carbon dioxide gas foam comprising a composition containing a carbonate and a composition containing an acidic component as constituents, and the components are mixed on or just before the skin. From the point of forming a foam, a cosmetic has been reported in which any one of the components is a composition containing an aqueous component (Patent Document 3).

However, when this cosmetic was applied to the skin, it was found that foaming occurred from the time when the two compositions were mixed, carbon dioxide could not be retained, and sufficient blood circulation promoting effects could not be imparted to the skin.
Japanese Patent Laid-Open No. 61-293908 JP 2000-191429 A JP 2000-297007 A

  An object of the present invention is to provide a skin cosmetic that can supply carbon dioxide continuously on the skin and can provide a sufficient blood circulation promoting action.

  Therefore, the present inventor has made various studies, and both the liquid composition containing carbonate and the acidic liquid composition are both non-aqueous, and when mixing and supplying water immediately before use, surprisingly, It has been found that the generation of carbon dioxide on the skin is sustained compared with the case where one of the two compositions is made aqueous, and a sufficient blood circulation promoting action is obtained.

  That is, the present invention contains (A) a non-aqueous liquid composition containing a carbonate or bicarbonate, and (B) an acidic non-aqueous liquid composition, and the composition (A) and the composition at the time of use. A carbon dioxide supply skin cosmetic for mixing (B) and supplying water for use is provided.

  When the skin cosmetic of the present invention is applied to the skin, carbon dioxide is continuously generated on the skin, and the blood circulation of the skin can be promoted continuously.

  The skin cosmetic of the present invention contains at least (A) a non-aqueous liquid composition containing a carbonate or bicarbonate, and (B) an acidic non-aqueous liquid composition, and these are independent forms until use. That is, they are supplied in a state where they are not mixed with each other, for example, in a individually packaged form, or in a separately filled form in one packaging form having a partition wall.

  Examples of the carbonate or bicarbonate used in the composition (A) include alkali metal salts such as sodium carbonate, potassium carbonate, sodium bicarbonate, and potassium bicarbonate, and alkali metals such as calcium carbonate, magnesium carbonate, and magnesium bicarbonate. Examples thereof include ammonium salts such as salts, ammonium carbonate, and ammonium hydrogen carbonate. Of these, potassium hydrogen carbonate or sodium hydrogen carbonate is particularly preferable. Moreover, these can also use 2 or more types together.

From the viewpoint of carbon dioxide generation amount, the carbonate or hydrogen carbonate has a concentration in the mixture at the time of skin application of 0.5 to 10% by mass, further 1 to 7% by mass, particularly 2 to 5% by mass. It is preferable to mix. When the composition (A) and the composition (B) are mixed at a ratio of 1: 2 to 2: 1 and applied to the skin, 0.75 to 30% by mass in the composition (A) and 1 It is preferable to make it contain 5-21 mass%, especially 3-15 mass%.

  The said composition (B) needs to be an acidic non-aqueous liquid from the point which generate | occur | produces a carbon dioxide when mixing with a composition (A) at the time of use and supplying water. Here, the acidic non-aqueous liquid is a non-aqueous liquid containing an acidic component that can make the water acidic when the composition (A) and the composition (B) are mixed at the time of use and water is supplied. I just need it. Such an acidic component may be any acid stronger than carbonic acid, such as inorganic acids such as phosphoric acid, hydrochloric acid, sulfuric acid and nitric acid, and organic acids such as oxalic acid, citric acid, malic acid, lactic acid, tartaric acid and fumaric acid. Is mentioned. Amino acids such as glutamic acid can also be used. Of these, citric acid, malic acid, tartaric acid, and fumaric acid are particularly preferable.

These acidic components are blended so that the concentration in the mixture at the time of skin application is 0.5 to 10% by mass, further 1 to 7% by mass, and particularly 2 to 6% by mass in terms of generating carbon dioxide. Is preferred. When the composition (A) and the composition (B) are applied to the skin at a ratio of 1: 2 to 2: 1, 0.75 to 30% by mass in the composition (B), and further 1.5 to It is preferable to contain 21% by mass, particularly 3 to 18% by mass.

  Both composition (A) and composition (B) are non-aqueous liquids. Here, the non-aqueous liquid is a non-aqueous system and has a fluidity, specifically, a moisture content of 5% by mass or less and a fluidity.

  The composition (A) and composition (B) include, in addition to the above-mentioned components, polyols, thickeners, surfactants, oils that are liquid at 25 ° C., moisturizers, fragrances, bactericides / preservatives, lower alcohols, etc. Can be contained. Among these, the blending of the polyol is particularly preferable from the viewpoint of sustaining the generation of carbon dioxide during use and the stability of the composition.

  The polyol is preferably liquid at normal temperature, and examples thereof include glycerin, 1,3-butylene glycol, propylene glycol, ethylene glycol, dipropylene glycol, and polyethylene glycol. It is preferable to contain the said polyol in 10-95 mass% in each composition, 15-90 mass%, especially 20-90 mass%.

  Examples of the thickener include carboxyvinyl polymer, alkyl methacrylate methacrylate copolymer, carrageenan, pectin, collagen, carboxymethyl starch, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and the like. These thickeners are preferably contained in each composition in an amount of 0.05 to 20% by mass, more preferably 0.1 to 15% by mass, and particularly preferably 0.2 to 10% by mass.

  The surfactant is important when the skin cosmetic of the present invention is used as a skin cleanser, and any of an anionic surfactant, a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant is used. Is possible. Examples of the anionic surfactant include alkyl sulfates, polyoxyethylene alkyl ether sulfates, α-olefin sulfonates, N-acyl amino acid salts, and phosphate ester salts. Nonionic surfactants include fatty acid esters such as glycerin fatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyethylene glycol fatty acid ester, pentaerythritol fatty acid ester, sucrose fatty acid ester; Examples include ethylene oxide adducts such as ethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene castor oil, and polyoxyethylene hydrogenated castor oil; fatty acid alkylamides and alkyl polysaccharides. Examples of the cationic surfactant include ammonium salts and amine salts such as alkyltrimethylammonium salts and dialkyldimethylammonium salts. By adding these components, in addition to foaming properties, effects such as bactericidal action, treatment effect and antistatic effect can be obtained. As the amphoteric surfactant, alkyldimethylamine oxide, alkylcarboxybetaine, alkylsulfobetaine and the like can be added as necessary for the purpose of enhancing foaming power. These surfactants can be blended in each composition, but are preferably blended in the composition (A) in the case of an alkaline salt. The total content of the surfactants (A) and (B) is preferably 1 to 50 mass%, more preferably 3 to 40 mass%, and particularly preferably 5 to 30 mass%.

  Examples of oils that are liquid at 25 ° C. include long chain hydrocarbons, higher fatty acids, higher fatty acid esters, higher alcohols, silicones, fluorocarbons, and the like. As long-chain hydrocarbons, liquid paraffin is preferred, and higher fatty acids, higher fatty acid esters, and higher alcohols include branched fatty acids, unsaturated fatty acids, branched fatty acid esters, unsaturated fatty acid esters, branched fatty alcohols, and unsaturated fatty alcohols. It is preferable because it exhibits a liquid state. Fats and oils such as jojoba oil, olive oil, castor oil, mink oil and macadamian nut oil, and derivatives of unsaturated fatty acids and branched fatty acids such as isopropyl myristate and diglyceryl diisostearate are preferable. As silicones, alkyl-modified silicone such as dimethylstearyl polysiloxane, highly polymerized methyl polysiloxane, cross-linked methyl polysiloxane, fluorinated fluorosilicone, and the like are preferable. Furthermore, as fluorocarbons, perfluoropolyethers such as 2- (perfluorohexyl) ethyl 1,3-dimethylbutyl ether, hydrofluoroethers, and the like are preferable. On the other hand, in order to improve the touch after application, fats and oils that are solid at 25 ° C., for example, higher fatty acids, higher fatty acid esters, and higher alcohols can also be added.

  Examples of the humectant include propylene glycol, glycerin, 1,3-butylene glycol, collagen, hyaluronic acid, caronic acid, sodium lactate, hydroxyethoxyethylguanidine, and casein. Examples of the bactericidal / preservative include paraoxybenzoic acid ester, potassium sorbate, phenoxyethanol, benzalkonium chloride, chlorhexidine chloride, photosensitizer, thymol, resorcin, trichlorocarbanilide and the like.

  Furthermore, you may supply the said polyol and thickener as a composition (C) different from a composition (A) and a composition (B).

  The carbon dioxide supply skin cosmetic of the present invention is used by mixing the composition (A) and the composition (B) and supplying water. The mixing ratio of the composition (A) and the composition (B) is not particularly limited, but it is preferably 1: 5 to 5: 1, particularly 1: 2 to 2: 1 in consideration of usability. Water may be applied after the mixture has been applied to the skin, water may be applied to the mixture and then applied to the skin, or the mixture may be applied to skin wet with water. Good. Carbon dioxide is generated only by the contact of the mixture with water, the generation of carbon dioxide is sustained, and the blood circulation promoting effect of the skin is sustained. When the skin cosmetic composition of the present invention is a skin cleanser, for example, the composition (A) and the composition (B) are mixed, and water is added to the mixture to clean the skin. The cleaning effect can be obtained at the same time. Since both the composition (A) and the composition (B) of the present invention are non-aqueous, it is particularly preferable for cleaning sebum and makeup.

Example 1
(1) Preparation of Liquid Compositions A and A ′ Containing Hydrogen Carbonate Each raw material was mixed and stirred at 80 ° C. with the composition shown in Table 1, and then gradually cooled to room temperature, and non-aqueous liquid composition A and aqueous liquid composition A ′ was prepared.

(2) Preparation of acidic liquid compositions B and B ′ After mixing and stirring the respective raw materials at the composition of Table 2 at 80 ° C., the mixture was gradually cooled to room temperature to prepare non-aqueous liquid composition B and aqueous liquid composition B ′. did.

Test Example 0.3 g of Composition A and 0.3 g of Composition B were placed on the palm of the left hand and mixed for 1 minute on the left palm using the index and middle fingers of the right hand. Next, 1 g of purified water was added as a washing model, and after mixing for a certain period of time, the carbon dioxide concentration of the mixture was changed to a carbon dioxide electrode (electrode model 9502 BN; Thermo Orion and portable pH / ion meter model 290A; ORION ).

  Table 3 shows the state of foaming during mixing and the measurement results of carbon dioxide.

  As a result, no foaming was observed when A and B were mixed, and the carbon dioxide concentration of several hundred ppm was still maintained even after 3 minutes had passed after mixing with water.

Comparative Example The operation was performed in the same manner as in Example except that A and B ′, A ′ and B, and A ′ and B ′ were used as the compositions to be mixed. As a result, foaming was observed when only the composition was mixed, but the carbon dioxide concentration was 100 ppm or less immediately after mixing with water.

Claims (3)

(A) A non-aqueous liquid composition containing carbonate or hydrogen carbonate and (B) an acidic non-aqueous liquid composition, wherein the composition (A) and / or the composition (B) is further a polyol. containing, the composition at the time of use (a) and composition (B) a 1: 5 to 5: are mixed with 1, carbon dioxide feed skin cosmetics for use in supplying water. (A) A non-aqueous liquid composition containing 0.75 to 30% by mass of carbonate or bicarbonate, and (B) a non-aqueous liquid composition containing 0.75 to 30% by mass of an acidic component, The carbon dioxide-supplied skin cosmetic according to claim 1, which is mixed at 2 to 2: 1. The carbon dioxide-supplied skin cosmetic according to claim 1 or 2, wherein the composition (A) and / or the composition (B) further contains a surfactant, and the cosmetic is a skin cleanser.